Douglas Engelbart -- whose work was behind such computing mainstays as the mouse, graphical user interfaces, and hyperlinks -- has died at 88.

In an e-mail, Engelbart's daughter Christina said he had passed away peacefully in his sleep Tuesday night.

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The mouse that roared: The mouse Engelbart and English created at SRI in 1968. (Credit: Stanford Research Inst …

Among techies, Engelbart is perhaps best known for what tech writer Steven Levy once called "the mother of all demos."

On December 9, 1968, Engelbart, then director of Stanford Research Institute's Augmentation Research Center, took the stage at San Francisco's Brooks Hall auditorium and launched into a demonstration of the work he and SRI's chief engineer, Bill English, had been doing.

The 100-minute demo included such paradigm-shifting technologies as the world's first publicly seen mouse, as well as the introduction of hyperlinks and navigable windows. It was, according to John Markoff, reporter at The New York Times and author of "What the Dormouse Said: How the 60s Counterculture Shaped the Personal Computer Industry," the first time that truly personal computing had been seen.